Exactly one of these five numbers is a square number. Which one?
a) 99,999,999 b) 123,333,333 c) 649,485,225 d) 713,291,035 e) 987,654,000
Which of the five black shapes is identical to the red one? There may be more than one which is exactly the same.
Can you circle exactly four of these numbers such that the total is twelve? 1 6 1 6 1 6 1 6 1 6 1 6